import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import GoodsList from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'

Vue.use(VueRouter)

  const routes = [
    { path: '/', redirect: '/login'},
    { path: '/login', component: Login},
    { 
      path: '/home', 
      component: Home, 
      redirect: '/welcome',
      children: [
      { path: '/welcome', component: Welcome},
      { path: '/users', component: Users },
      { path: '/rights', component: Rights},
      { path: '/roles', component: Roles},
      { path: '/categories', component: Cate},
      { path: '/params', component: Params},
      { path: '/goods', component: GoodsList},
      { path : '/goods/add', component: Add},
      { path : '/orders', component: Order},
      { path : '/reports', component: Report},
    ]
  }
]

const router = new VueRouter({
  routes
})
// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next是一个函数 表示放行
  //  next()  放行     next('/login') 强制跳转
  if (to.path === '/login') return next();
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login');
  next();
})

export default router
